oxygen; 2,6-Ph2-C5H3N; C27H51CuN3(2+)*2Cl(1-) in toluene T=40°C; Product distribution / selectivity;

(1,4,7-triisopropyl-1,4,7-triazacyclononane)copper Cl2; oxygen; 2,6-Ph2-C5H3N in tetrahydrofuran T=40°C; P=760 Torr; 7.5 h; other catalysts; other solvents; also in the presence of AIBN; var. reaction time; Product distributionMechanism;

(i), (ii) HI, AcOH; Multistep reaction;